I have bad news for you. The last time I looked people were selling the magazines by themselves for more than they were selling the guns without magazines. They are very hard to come by although I have not looked lately. There is an outfit that makes a credible copy of the mag but it is an eight-rounder, not seven, and protrudes below the line of the trigger guard, thereby spoiling the looks, IMO. I have an original with my model 1903 and one of the aftermarkets, both work fine. I think the aftermarket went for $35 but that was a couple years ago. The last time I saw any mags for the gun they were $55-70 but again this is old info.

Sorry I can't think of the name of the aftermarket supplier. I think it was in the southwest. Maybe google can help. If you find a source for the mags please let me know.

FWIW, the 1903 in its several variations, the 1909 variant and the 1912 semi-auto all used the same mag. I saw a model 1912 that had no magazine being offered for $40-50. Mags were running much more.